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3 years ago

The model below represents the sum of two mixed numbers.

Mathematics

1 answer:

Lemur [1.5K]3 years ago

4 0

Answer:

hey I am not sure about the answer but I guess this is the right answer:

(x+3)+x

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How many cubes with side lengths of 1/2 cm does it take to fill the prism?

MAVERICK [17]

You can download answer here

tinyurl.com/wtjfavyw

8 0

3 years ago

Determine whether the function represents exponential growth, exponential decay, or neither. Explain.y = 161(0.725)t

SOVA2 [1]

If it looks like this
y = 161*(0.725)^t then it's a decay. Reason: the base is under 1. Try a couple of values for t say 0,1,2

y = 161 * (0.725)^0
y = 161

y = 161 * (0.725)^1
y = 161 * 0.725
y = 116.7

y = 161 * (0.725)^2
y = 161 * (0.5256
y = 84.63

You can see that the function is steadily getting smaller. Remember if the base is under 1 and more than 0 the function decays. If it is greater than 1 then the function grows.

Just to make sure we understand what I'm saying
0 < base < 1
y = a ( base)^power.

6 0

3 years ago

3) For a certain good we have LaTeX: q=f\left(p\right)=200e^{-0.4p}q = f ( p ) = 200 e − 0.4 p.

disa [49]

Answer:

(a)20

(b)Elastic

(d) Elastic

Step-by-step explanation:

Elasticity of demand(E) indicates the impact of a price change on a product's sales.

The general formula for an exponential demand curve is given as:

$y=ae^{-bp}$

Given the demand curve formula

$q=f\left(p\right)=200e^{-0.4p}$

The formula for Elasticity of demand, E

$E = -\dfrac{p}{q}\dfrac{\text{d}q}{\text{d}p}$

(a)When Price, p = $50

p=50

$q=200e^{-0.4*50}=200e^{-20}$

$\dfrac{\text{d}q}{\text{d}p}=-0.4*200e^{-0.4p}=-80e^{-0.4p}$

Therefore:

$E = -\dfrac{50}{200e^{-20}}*-80e^{-0.4*50}\\=\dfrac{1}{4e^{-20}}*80e^{-20}\\\\E=20$

(b)At p = $50, Since elasticity is greater than 1, the demand is elastic.

An elasticity value of 20 means that a 1% increase in price causes a 20% decrease in demand.

(c)At p=$20

p=20

$q=200e^{-0.4*20}=200e^{-8}$

$\dfrac{\text{d}q}{\text{d}p}=-0.4*200e^{-0.4p}=-80e^{-0.4p}$

Therefore:

$E = -\dfrac{20}{200e^{-8}}*-80e^{-0.4*20}\\=\dfrac{1}{10e^{-20}}*80e^{-20}\\\\E=8$

(d)At p = $20, the demand is elastic.

An elasticity value of 8 means that a 1% increase in price causes a 8% decrease in demand.

5 0

4 years ago

A random sample of 12 families were asked how many kids they had. The data are given below. According to the US Census, families

Lana71 [14]

Answer:

0.308

Step-by-step explanation:

Given the data:

1, 1, 2, 2, 2, 3, 3, 3, 3, 4, 4, 6

We need to obtain the sample mean and sample standard deviation :

Sample mean, xbar = Σx/n

Where n = sample size (1+1+2+2+2+3+3+3+3+4+4+6) / 12 = 2.833

Sample standard deviation, s

Using the formula :

s = √Σ((x - xbar)² / n-1)

s = 1.40

Hypothesis :

H0 : μ = 2.4

H1 : μ ≠ 2.4

The test statistic :

(xbar - μ) ÷ (s/√(n))

(2.833 - 2.40) / (1.40/sqrt(12))

Test statistic = 1.0713

Using the Pvalue from Test score calculator :

df = n - 1 = 12 - 1 = 11 ; two tailed

Pvalue(1.071, 11)

= 0.3069

= 0.307

7 0

3 years ago

30 POINTS PLEASE HELP THIS IS DUE TMRRRR

xenn [34]

Answer:

I think Tony would be right, I THINK!!

5 0

4 years ago

Read 2 more answers